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From:   "Jason A. Donenfeld" <Jason@zx2c4.com>
Date:   Wed, 19 Jan 2022 11:56:39 +0100
Message-ID: <CAHmME9pPKjRLmR6zpYFZT7rOOfHsG2ESnDi+QQrDJuGLo1X4JQ@mail.gmail.com>
Subject: Re: [PATCH] lib/crypto: blake2s: fix a CFI failure
To:     Miles Chen <miles.chen@mediatek.com>
Cc:     ardb@kernel.org, davem@davemloft.net, gregkh@linuxfoundation.org,
        herbert@gondor.apana.org.au, linux-arm-kernel@lists.infradead.org,
        linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-mediatek@lists.infradead.org, matthias.bgg@gmail.com,
        nathan@kernel.org, ndesaulniers@google.com
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On 1/19/22, Jason A. Donenfeld <Jason@zx2c4.com> wrote:
> Hi Miles,
>
> Okay. Keep me posted.
>
> Just FYI, as mentioned, I'm unable to reproduce this, and you haven't
> provided any further minimized guidance on how I might reproduce this,
> so it'll sit in the "not a bug" bin until I have another clue on how
> to reproduce. Alternatively, Nick and Nathan are now on this thread
> and they usually have good luck teasing out compiler issues and such,
> so maybe they'll have an idea. But I'm afraid with the information I
> currently have, I'm at a dead end.
>
> Jason
>

We're back in business! I was able to reproduce this using FullLTO
rather than ThinLTO.